What focus duration can I expect from a single Semax dose?

A single Semax dose (300-1200mcg intranasal) typically provides 4-6 hours of enhanced focus and concentration without the crash associated with stimulants. Effects begin within 15-30 minutes and build to peak performance at 1-2 hours. <a href='https://pubmed.ncbi.nlm.nih.gov/16447562/' target='_blank'>Time-course studies</a> show sustained cognitive enhancement throughout the work day with morning administration.